/*
*  Copyright 2011 RoboViz
*
*  Licensed under the Apache License, Version 2.0 (the "License");
*  you may not use this file except in compliance with the License.
*  You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
*  Unless required by applicable law or agreed to in writing, software
*  distributed under the License is distributed on an "AS IS" BASIS,
*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*  See the License for the specific language governing permissions and
*  limitations under the License.
*/
 
uniform sampler2D   diffuseTexture;

varying vec2        diffuseTexCoords;
varying float       depth;

void main()
{
    vec4 C_texture = texture2D(diffuseTexture, diffuseTexCoords);
	gl_FragColor = vec4(depth, depth * depth, 0.0, C_texture.a);
}